First thing to do: disable OSS and reboot

Can you uninstall OSS, or reconfigure it to not load any kernel
modules? I don't understand why OSS would mess up your CardBus bridge
settings, but it would be worth verifying whether or not OSS is really
at fault here.
It appears that something has tried to remap your bridge at a base
address of 0x00003000, which is certainly bogus, since that address
would overlap the bridge with your system RAM. I assume that you are
not specifying any unusual options for the PCMCIA modules?
-- Dave